paxson



W. W. PAXSON.

Stove-Pipe Damper.

Patented Jan. 8, I867.

N-PETBIS. PHOTO-UTHOGMFHEI, WASHINGTON. D. C,

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W. W. PAX SON, OF POINT PLEASANT, PENNSYLVANIA.

' I Letters Patent No. 61,093, dated January 8, 1867.

IMPROVEMENT IN DAMPERS.

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TO ALL WHOM IT MAY oo'nonnn:

Be it known thatI, W. W; PAXSON, of Point Pleasant, Bucks county, Pennsylvania, have invented a new and improved method of constructing a Ventilating Damper for the pipes and lines of stoves, heaters, 350.; and I do hereby declare that the following is a full and exact description thereof, reference being bad to the accompanying drawings, and to the letters of reference marked thereon.

The nature of my invention consists of an opening in the pipe or flue, through which the draught of the chimney may be supplied with the cool air of the room insteadof the hot air from the stove, thus accomplishing the two purposes of ventilating the room by drawing oil the impure air therefrom, at the some time efl'ectually cutting oil the current of hot air that must necessarily be drawn from the stove through the pipe, and then cscaping out of the chimney, without rendering any heat tothe room. It may be claimed that the opening of the'stove door would accomplish the same object; but this is not the fact, because in this case all the heat generated or contained in the upper part of the stove is carried away before the cold air, which, coming in so near the fire, must deaden it, and, if neglected for a time, will cause it to go out entirely. But the application of this valve or opening, being placed at such a distance from the fire as to save all the heat in '(the stove for radiation in the room, and at the same time leave sutficient draught to prevent the fire from going out, permitting it to burn or smoulder away gradually, and by properly adjusting the slide, can regulate the fire to suit the temperature without any waste of fuel.

Figure 1 is a perspective view of a section of pipe, with the opening and damper, as constructed and applied Figure 2 is a side sectional view of the same.

The pipe A has an opening cut therein, as shown at C C, figs. 1 and 2, and a portion of the metal at the lower end of said opening being depressed, as shown at a a. The ledges or ways v6 6, which hold and guide the valve or slide 13 B are of sheet metal, and secured to the pipe A by the rivets c c. The elasticity of slide B causes it to remain in any place to which it may be removed by the turned-up portion d. The construction of this damper renders it the most easy of application of any heretofore in use, and at the same time the cheapest and most durable. When it is found necessary to enlarge the opening, it is easily accomplished without removing the pipe, an advantage not possessed by anyother known. 7

I am aware that cast-iron dampers, to be attached to stove and other pipes, have been for some time in use; but on account of the diiliculty of applying them, and their liability to be broken when applied, they fail to give satisfaction. And another serious objection to them is that the pipes, of whatever diameter, must be made to conform to the damper, which, being rigid, will not admit of being curved to suit the pipe. All these objections are effectually overcome in the damper herein described. I am aware'of dampers made by joining two frustums of cones at their largest base, the lower frustum being providedwith apertures, and the upper with apertures and slides or valves. My invention diil'ers materially from these, particularly in construction. I manufacture my device so as to oil'er it for sale as an entire damper, which can be applied to a pipe with merely the trouble of putting it between the sections of any stove pipe, and with but the smallest expense in its construction. It is so simple, being made of sheet metal, that it can be cheaply and quickly manufactured and applied, as heretofore described, and is much more durable and easier of operation than any other now in use.

What Idesire to secure by Letters Patent, is-

The new article of manufacture herein described, being a section of stove pipe, with swaged deflector a, cleats b, and slide 13, as and for the purpose set forth.

W. W. PAXSON. Witnesses EMMETT QUINN, Eon. F. BROWN- 

